JPH06304833A - Clamp device - Google Patents

Abstract

PURPOSE:To provide a clamp device formed in such a structure that a material to be processed can easily be mounted and removed, so as to attempt reduction of processing work man hours, and that of the product cost and running cost of the material to be processed and improve a work environment. CONSTITUTION:This device is provided with a loading base 10 for loading a material to be processed 200 cut by plural cutting edges 300, and claw parts 21 on which plural passing grooves 26 in which the plural cutting edges 300 can enter respectively are formed and supporters 20 for fixing the material to be processed 200 on the loading base 10 by the contact with these claw parts 21. The plural supporters 20 are arranged separately in accordance with the plural material pieces to be processed 210 to be cut off by plural cutting edges 300 respectively and respective supporters 20 are energized in the contact direction of the claw parts 21 by an energizing means 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp device used for cutting a long work piece with a predetermined width.

[0002]

2. Description of the Related Art Conventionally, as a technique for cutting a long workpiece, for example, there is a technique for cutting and forming a prism which is an optical component. This cutting technology applies wax, which is a type of adhesive, to the mounting table for processing, and after fixing the long glass block on the mounting table with the adhesive force of this wax, use a whetstone as a cutting blade. The glass block is cut into pieces at a predetermined interval in the length direction.

Specifically, wax is heated and melted to be applied on a mounting table, a glass block is mounted on the wax, the wax is cooled and solidified, and the glass block is adhesively fixed on the mounting table. Next, a plurality of prisms are formed by cutting the fixed glass block with a grindstone at predetermined intervals in the length direction. Finally, the wax adhered to each prism is melted and softened so that each prism is peeled off from the wax.

[0004]

However, the above-mentioned conventional technique has the following problems. When fixing the glass block to the mounting table, it is necessary to perform a plurality of operations such as heating, melting, coating, cooling and solidifying the wax, and adhering and fixing the glass block to the mounting table.

Further, as a peeling work of each prism cut and formed by a grindstone, a plurality of works of melting and softening the wax adhered to each prism and peeling each prism are required. That is, in the conventional technique, a very large number of work steps are required to form the prism,
Moreover, since each work requires a considerable amount of skill, the manufacturing efficiency is low, and as a result, the product cost of the prism is high.

Further, when the prisms are peeled off from the mounting table, the wax must be dissolved using an organic solvent, so that it is necessary to wash the organic solvent off the prisms, and at the same time, the organic solvent should be used for the work environment. There was also a problem that it became significantly worse.

The present invention has been made in order to solve the above-mentioned problems, and has a structure in which a work piece can be easily attached and detached to reduce the number of working steps, and the product cost and running cost of the work piece. It is an object of the present invention to provide a clamp device capable of reducing the work load and improving the working environment.

[0008]

Means for Solving the Problems The above-mentioned object is to provide a mounting table for mounting a work piece to be cut by a plurality of cutting blades, and a plurality of passage grooves into which the plurality of cutting blades are respectively inserted. This is achieved by a clamp device that has a support portion and is configured to fix the work material on the mounting table by the support portion.

Further, preferably, the support portion has a claw portion, and the claw portion can be brought into contact with or separated from the workpiece to fix or release the workpiece on the mounting table. It may be configured to include a fixing releasing means.

A plurality of the support portions may be provided separately corresponding to the plurality of workpiece pieces to be separated by the plurality of cutting blades.

Further, preferably, a biasing means for biasing the claw portion of the support portion in the contact direction may be provided.

The claw portion may have an elastic member at its abutting portion.

Further, in the present invention, the above object is to form a mounting table for mounting a work material cut by a plurality of cutting blades, and a plurality of passage grooves into which the plurality of cutting blades are respectively inserted. The work piece is fixed on the mounting table by the support portion, and the claw portion of the support portion is moved toward and away from the work piece by the rotating operation of the eccentric cam. A clamping device provided with a fixing releasing means for fixing and releasing the workpiece on the mounting table,
To be achieved.

[0014]

According to the above construction, the work piece is placed on the mounting table,
The workpiece is fixed to the mounting table by bringing the support portion into contact with the workpiece. Then, the plurality of cutting blades are inserted into the plurality of passage grooves of the claw portion to cut the workpiece at predetermined intervals.

Further, by using the fixing releasing means, the work piece can be easily attached and detached.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

The examples described below are preferred specific examples of the present invention, and therefore, various technically preferable limitations are attached thereto. However, the scope of the present invention is particularly limited in the following description. The present invention is not limited to these modes unless there is a statement to limit the above. For example, in the following examples, the glass block is applied as the material to be processed, but it is needless to say that the present invention is not limited to this and can be applied to any material such as a metal rod.

FIG. 1 is a diagram showing a clamp device according to a first embodiment of the present invention. FIG. 2 is a view showing a mounted state of the work piece, and FIG. 3 is a view showing a detached state of the work piece.

In FIG. 1, reference numeral 1 is a clamp device. As shown in FIG. 4, this clamp device 1 is a glass block 20 having a long and trapezoidal cross section as a workpiece.
By holding 0 and cutting the glass block 200, the prism 210 of the optical pickup can be cut and formed.

This clamp device 1 includes a glass block 2
Mounting table 10 for mounting 00, a supporting portion 20 for fixing the glass block 200 on the mounting table 10, and the supporting body 2
And a fixing release mechanism 40 for acting on 0 to fix and release the glass block 200.

The mounting table 10 has a mounting surface portion 11 for mounting the glass block 200 on the upper surface thereof. The mounting surface portion 11 is formed of a long horizontal surface corresponding to the shape of the bottom surface of the glass block 200, and a positioning portion 13 is formed at its side end portion so as to project along the length direction.

The positioning portion 13 is provided in the glass block 2
00 is a part for positioning the side surface, and in the length direction thereof, a plurality of notch grooves 14 continuous with the upper surface of the mounting surface portion 11 are formed.
Has been cut. In addition, a locking portion 16 that locks the end surface of the glass block 200 is provided at one end of the mounting surface portion 11.
Is projected.

On the other hand, the supporting portion 20 is a hook-shaped member having a clamp claw 21 integrally formed on the upper portion thereof, and the above-mentioned positioning portion 13 is provided.
Are installed facing each other. Specifically, the glass block 200 is attached to the clamp claw 21 of each support portion 20.
The rubber 22 to be brought into contact with the inclined surface 201 is attached, and a pair of attachment portions 23 facing the mounting table 10 side are projectingly provided at the central portion of the support portion 20.

Then, the clamp claw 21 is attached to the positioning portion 13.
The mounting portions 23 are rotatably connected to the mounting table 10 by the shafts 25 with the mounting portions 23 fitted in the recesses 18 of the mounting table 10 facing the sides.

As a result, the plurality of support portions 20 are arranged at a predetermined interval in the lengthwise direction of the side end of the mounting surface portion 11, and the plurality of passage grooves 26 formed by the gaps between the support portions 20 are formed. Each passage groove 26 is set so as to communicate with the upper surface of the mounting surface portion 11. That is, the passage groove 2 communicating with each other
6, the upper surface of the mounting surface portion 11 and the notch groove 14 constitute a grindstone passage through which the cutting edge of each grindstone 300 can pass, and a plurality of grindstone passages are formed corresponding to the number of the grindstones 300.

Each support portion 20 is biased by a coil spring 30 in a direction in which the clamp claw 21 comes into contact with the glass block 200. That is, as shown in FIG. 2, below the recesses 18 of the mounting table 10, the spring accommodating portions 31 opening to the supporting portion 20 side are formed by the number of the supporting portions 20, and each of the spring accommodating portions 31 has a spring accommodating portion 31. Multiple stored coil springs 3
0 urges the lower ends of the plurality of support portions 20 outward.

As a result, the clamp claw 21 presses the slope 201 of the glass block 200 via the rubber 22 to fix the glass block 200. The fixing operation can be released by the fixing release mechanism 40.

The fixing release mechanism 40, as shown in FIG.
The U-shaped frame 41 is attached to the mounting table 10 by the adjusting screw 45, and the operation screw 43 is attached to the center of the frame 41.

As shown in FIG. 2, the operating screw 43 faces the fixing portion 27 of the supporting portion 20 and opens so as to open.
The screw 44 is screwed into the screw hole 42 formed in No. 1, and the operating screw 43 moves the fixing portion 27 forward and backward by rotating the knob 44.

That is, when the operation screw 43 is advanced and the fixing portion 27 is pushed against the biasing force of the coil spring 30, as shown in FIG. 3, the clamp claw 21 is moved away from the glass block 200 and the supporting portion 20 is moved. Rotates. On the contrary, when the operation screw 43 is loosened, the support portion 20 is rotated in the direction in which the clamp claw 21 comes into contact with the glass block 200.

Next, an example of use of the clamp device 1 will be described. When the glass block 200 is attached to the clamp device 1, as shown in FIG. 3, the knob 44 is turned to advance the operating screw 43, and the tip of the operating screw 43 resists the biasing force of the coil spring 30 and the fixing portion 27. push. Then, as shown by the arrow B, the support portion 20 rotates about the axis 25,
The clamp claw 21 opens.

In this state, as shown in FIGS. 1 and 3, the glass block 200 is mounted on the mounting surface portion 11. That is, the end surface of the glass block 200 is locked to the locking portion 16 in a state where the inclined surface 201 of the glass block 200 is directed to the clamp claw 21 side and the side surface is brought into contact with the positioning portion 13 and positioned.

After mounting the glass block 200 on the mounting surface portion 11 in this manner, the knob 44 is turned in the opposite direction to retract the operating screw 43, and the pressing force of the operating screw 43 on the support portion 20 is released. Then, as shown in FIG. 2, the support portion 20 is rotated around the shaft 25 in the direction of arrow A by the biasing force of the coil spring 30, the clamp claw 21 is closed, and abuts the slope 201 of the glass block 200.

As a result, the glass block 200 is pressed by the clamp claw 21 via the rubber 22. Specifically, the glass block 200 is pressed against the positioning portion 13 by the horizontal component force of the pressing force applied to the slope 201, and is pressed against the mounting surface portion 11 by the downward vertical component force. Moreover, since the glass block 200 is held by the frictional force of the rubber 22, the glass block 20
0 is firmly fixed on the mounting surface 11.

After the glass block 200 is mounted and fixed on the mounting surface portion 11 in this way, the glass block 200 is cut by a plurality of rotating grindstones 300. This is
As shown in, the cutting edge of the grindstone 300 is inserted into the passage groove 26 between the support portions 20 in the direction of the arrow, and either the grindstone 300 or the clamp device 1 is horizontally moved.

As a result, the cutting edges of the respective grindstones 300 communicate with each other, the passage groove 26, the upper surface of the mounting surface portion 11 and the positioning portion 1
When the glass block 200 is cut into the passages for the grindstones formed by the three notch grooves 14, the glass blocks 200 are cut out from the passages for the grindstones.

At this time, the rotational vibration of the grindstone 300 is transmitted to the glass block 200, and the shock due to the vibration is applied to the glass block 200. However, since the glass block 200 is held by the rubber 22 of the clamp claw 21,
The impact is absorbed by the rubber 22, and the glass block 200 is not displaced or damaged by the impact.

When the plurality of grindstones 300 pass through the plurality of grindstone passages, the glass block 200 is cut and a plurality of prisms 210 are formed, as shown by the chain double-dashed lines in FIGS. 1 and 4. At this time, since the plurality of prisms 210 that are cut and formed are independently pressed by the supporting portions 20, the prisms 210 are firmly fixed by the pressing force of the supporting portions 20.

Then, as shown in FIG. 3, the knob 44
Is rotated, the fixing portion 27 is pushed by the operation screw 43, and the support portion 20 is rotated as shown by an arrow B. Clamp claw 21
Open to release the pressing force on the prism 210,
The plurality of formed prisms 210 are taken out from the mounting surface portion 11.

As described above, according to this embodiment, the glass block 200 is placed on the placing surface portion 11 and the supporting portion 20 is closed by the operation of the fixing releasing mechanism 40, so that the glass block 200 is placed on the placing surface portion. 11 can be easily fixed on the mounting surface 11, and the plurality of prisms 210 formed can be easily removed from the mounting surface 11 by opening the support 20 by operating the fixing releasing mechanism 40. There is no need to use wax as in the conventional example.

Therefore, a large number of highly skilled operations such as heating and melting of the wax are not required, so that the man-hours for mounting and removing the glass block 200 can be significantly reduced, and the product cost of the prism 210 is low. can do.

Also, since it is not necessary to use an organic solvent when removing the prism 210, the man-hours for cleaning the prism 210 can be reduced, and the working environment of the prism manufacturing factory can be improved and improved. it can. And
Running costs can be greatly reduced because auxiliary materials such as wax and organic solvent are not required.

Next, a clamp device according to a second embodiment of the present invention will be described. FIG. 5 is a diagram showing the clamp device of the present embodiment. In FIG. 5, reference numeral 2 is a clamp device, and the clamp device 2 is configured to hold a plurality of glass blocks 200 by a mechanical chuck 50 mounted on a magnet chuck 90.

A plurality of mechanical chucks 50 are removably mounted on the magnet chuck 90. Each mechanical chuck 50 has a jig storage box 51 and a plurality of jigs which are stored in the jig storage box 51 and hold the glass block 200. The jig 52 which is an individual clamp device, and the fixing releasing mechanism 80 which performs the fixing releasing operation of these jigs 52.

The jigs 52 are similar to the individual clamp devices described in the first embodiment. Then, the jig 52, as shown in FIG.
The mounting table 60 for mounting 00 on the mounting table 60 and the supporting portion 70 for fixing the glass block 200 on the mounting table 60 are provided.

The mounting table 60 is the mounting table 1 of the first embodiment.
Like 0, it has a mounting surface portion 61 for mounting the glass block 200, and a positioning portion 63 formed at the side end portion of the mounting surface portion 61 so as to project. The positioning portion 63 is provided with a plurality of cutout grooves 64 continuous with the upper surface of the mounting surface portion 61.

On the other hand, the supporting portion 70 also has a clamp claw 71 with a rubber 72 and is mounted in a plurality facing the positioning portion 63, similarly to the supporting portion 20 of the first embodiment. That is, the plurality of support portions 70 are provided in the jig storage box 51.
A plurality of passage grooves 76 that are rotatably attached to a shaft 75 that is bridged between the plurality of support portions 70 are formed. Thus, the passage groove 76, the upper surface of the mounting surface portion 61, and the notch groove 64 form a grindstone passage through which the blade edge of each grindstone 300 can pass.

Each of the supporting portions 70 as described above is also biased by a coil spring 78 housed in a spring housing portion 79 of the mounting table 60, as shown in FIGS. That is, the coil spring 78 in the spring accommodating portion 79 is not
The lower end of each of the
1 is the slope 20 of the glass block 200 through the rubber 72.
The glass block 200 is fixed by pressing 1.

A plurality of such jigs 52 are mounted in the jig storage box 51 to form one mechanical chuck 50. Then, the fixing and releasing of the plurality of glass blocks 200 held by the jig 52 of each mechanical chuck 50 is simultaneously performed by the fixing releasing mechanism 80 attached to each mechanical chuck 50.

The fixing releasing mechanism 80, as shown in FIG.
Clamp release bar 81, eccentric cam 85 for moving clamp release bar 81 to the left in the figure, and eccentric cam 8
5 and a clamp release lever 88 (two-dot chain line) for rotating 5.

The clamp release bar 81 has a plurality of engaging portions 82 which are recessed on the upper surface thereof.
In a state in which 2 is engaged with the lower end of the support portion 70, the jigs 2 are horizontally arranged below or below the jigs 52. And
A coil spring 83 is provided on the tip side of the clamp release bar 81.
The coil release spring 81 urges the clamp release bar 81 to the right in the figure.

The eccentric cam 85 is arranged near the right end of the clamp release bar 81. Specifically, the rotating shaft 86
Is rotatably attached to the jig storage box 51, and an eccentric cam 85 is fixed to the rotating shaft 86 in an eccentric state.

The clamp release lever 88 is fixed to the rotary shaft 86. When the clamp release lever 88 is rotated, the eccentric cam 85 is integrally rotated to press the clamp release bar 81 to the left in the figure. Has become.

A plurality of mechanical chucks 50 each having such a fixing releasing mechanism 80 are mounted on the magnet chuck 90 as described above. As shown in FIGS. 5 and 7, the magnet chuck 90 has a plurality of magnets 92 embedded in a horizontal surface 91 thereof, and the magnetic force of the magnets 92 fixes the mounted mechanical chuck 50. Is able to.

Further, a positioning wall portion 93 is formed on the side portion of the magnet chuck 90, and by positioning the magnet chuck 90 on the positioning wall portion 93, the positioning of the magnet chuck 90 is performed. . The magnet chuck 90 is horizontally conveyed in the direction of the arrow in FIG. 7 by an AC servo motor (not shown).

Next, an example of use of the clamp device 2 will be described. First, the clamp device 2 for the glass block 200
Attach to. This installation is done with the mechanical chuck 50
Is removed from the magnet chuck 90. That is, the plurality of mechanical chucks 50 are removed from the magnet chuck 90, and the clamp release lever 88 of the fixing release mechanism 80 is lifted and rotated to bring the support portions 70 in the respective mechanical chucks 50 into the released state as shown in FIG. (The releasing operation will be described later).

In this state, the plurality of glass blocks 200
-1 to 200-4 are arranged on the respective mounting surface portions 11 of the plurality of jigs 52-1 to 52-4. After that, the fixing release mechanism 80
The clamp release lever 88 of is rotated and laid down as shown in FIG.

As a result, the pressing force of the eccentric cam 85 against the clamp releasing bar 81 is released, and the urging force of the coil spring 83 moves the clamp releasing bar 81 to the right in FIG. By the right movement of the clamp release bar 81, the lower ends of the support portions 70 of the jigs 52-1 to 52-4 are pulled rightward, and the clamp claws 71 of the support portion 70 are closed leftward. As a result, the clamp claw 71 makes the slope 20 of the glass blocks 200-1 to 200-4 through the rubber 72.
Press 1.

In this way, the plurality of mechanical chucks 5
After mounting the plurality of glass blocks 200 on the 0-1 to 50-4, as shown in FIG. 5 and FIG. 7, the mechanical chucks 50-1 to 50-4 are directed toward the grindstone 300 and the horizontal surface of the magnet chuck 90. Place it on 91.

When this placement is performed, the mechanical chuck 5
0-1 to 50-4 are generated by the magnetic force of the magnet 92.
It is crimped and fixed on the horizontal plane 91. From this state,
Positioning is performed by pressing the entire mechanical chucks 50-1 to 50-4 against the positioning wall portion 93.

Thus, the mechanical chuck 50-1
After positioning to fix 50 to 50-4 on the magnet chuck 90, the magnet chuck 90 is horizontally conveyed in the direction of the rotating grindstone 300 by the AC servo motor (not shown) as shown by the arrow in FIG.

By this conveyance, the cutting edges of the plurality of grindstones 300 enter the passage groove 76 of the jig 52-1 in the mechanical chuck 50-1 located at the leftmost end, and the grindstones 300
Blade edge cuts the glass block 200-1. Then, the glass blocks 200-2 to 200-4 mounted on the jigs 52-2 to 52-4 are cut in order. In FIG. 5, reference numeral 310 is a grinding fluid ejection nozzle, and reference numeral 311 is a grinding fluid supply bracket.

This transfer is performed by the mechanical chuck 50-2.
The process is repeated until the glass blocks 200 of 50 to 50-4 are sequentially cut, and when the cutting is completed, the AC servomotor is stopped and the conveyance of the magnet chuck 90 is stopped.

As described above, according to the clamp device 2, the plurality of glass blocks 200-1 to 200 mounted in the plurality of mechanical chucks 50-1 to 50-4 can be obtained by only carrying the magnet chuck 90 once. -4 can be cut, so a large number of prisms 210 (see FIG. 6)
Can be formed at once.

After the conveyance of the magnet chuck 90 is stopped, the mechanical chuck 50 is removed from the magnet chuck 90 against the magnetic force of the magnet 92, and the prism 210 formed by cutting is taken out from each mechanical chuck 50.

This removal is performed by lifting and rotating the clamp release lever 88 of the fixing release mechanism 80, as shown in FIG. That is, by lifting the clamp release lever 88 and rotating the eccentric cam 85, the eccentric cam 85 pushes the right end portion of the clamp release bar 81 leftward in the figure against the biasing force of the coil spring 83, The clamp release bar 81 moves horizontally to the left. By the leftward movement of the clamp release bar 81, the lower end portions of the support portions 70 of the jigs 52-1 to 52-4 are pulled leftward in the figure, and the clamp claws 71 of the support portion 70 are opened rightward.

As a result, the clamp claw 71 is attached to the prism 21.
Since the prism 210 is released from the zero slope 201, the prism 210 can be taken out from the mechanical chuck 50 in this state.

As described above, according to this embodiment, since a plurality of glass blocks 200-1 to 200-4 can be attached to and cut from a plurality of mechanical chucks 50, respectively, an extremely large number of prisms can be cut. 210 can be efficiently formed.

Further, the mechanical chucks 50-1 to 50-5
Two sets of 0-4 are prepared, and one set of glass block 200
If the glass block 200 of the other set is attached or the prism 210 is removed during the cutting process, the working rate can be further increased. Other configurations and operational effects are substantially the same as those in the above-mentioned first embodiment, and therefore description thereof is omitted.

Next, a clamp device according to a third embodiment of the present invention will be described. FIG. 9 is a diagram showing the clamp device of this embodiment. This clamp device 3 is also similar to the first and second embodiments described above, except that the die plate 100 is used.
A mounting table 110 attached to the upper flange 130,
A supporting part 120 for fixing the glass block 200 on the mounting table 110, and a glass block 2 acting on the supporting part 120.
And a fixing release mechanism 140 for fixing and releasing 00.

However, the mounting table 110 is provided with the vacuum 118 for adsorbing the glass block 200, and the eccentric cam 145 of the fixing releasing mechanism 140 is directly applied to the supporting portion 120 to fix the glass block 200.
This is different from the first and second embodiments in that the release is performed.

The vacuum 118 is attached to the mounting table 110, and its suction port communicates with the opening 117 of the mounting surface portion 111 through the hole 119.

As a result, the glass block 200 is placed on the opening 117 in a state of being in contact with the positioning portion 113,
When the vacuum 118 is activated, the opening 117, the hole 11
The inside of 9 becomes a vacuum state, and the glass block 200 is firmly adsorbed and fixed onto the mounting surface portion 111.

On the other hand, the eccentric cam 14 of the fixing release mechanism 140
5 is disposed near the lower end of the support 120. Specifically, the rotary shaft 146 is rotatably mounted on the cam mounting portion 141 on the die plate 100, and the eccentric cam 145 is fixed to the rotary shaft 146.

The clamp release lever 148 is fixed to the rotary shaft 146 integrally with the eccentric cam 145.

As a result, when the clamp release lever 148 is laid to the left as indicated by the chain double-dashed line, the eccentric cam 145 is moved toward the flange flange 13 as shown by the chain double-dashed line.
The lower end of the support 120 is pressed to the right in the figure against the biasing force of the coil spring 131 stored in the spring storage 132 of 0, and the clamp claw 121 of the support 120 opens left.

As a result, the clamp claws 121 are separated from the glass block 200, and the glass block 200 is released from being fixed. On the contrary, when the clamp release lever 148 is laid to the right as indicated by the one-dot chain line, the eccentric cam 145 rotates in the direction to release the pressing force on the lower end of the support portion 120 as indicated by the solid line, and the coil spring is released. The urging force of 131 closes the clamp claw 121 to the right.

As a result, the clamp claw 121 has the rubber 122.
The glass block 200 is brought into contact with the glass block 200 via the so that the glass block 200 is fixed on the mounting surface portion 111.

[0079]

As described above, according to the present invention, the work piece can be mounted on and removed from the mounting table by a mechanical operation of bringing the support member into contact with the work piece. It eliminates the need for wax as in the example. Therefore, it is not necessary to perform a large number of skilled operations such as heating, melting, coating, cooling and solidifying the wax, fixing and fixing the workpiece, melting and softening the wax, and peeling each cut workpiece piece. It is possible to significantly reduce the man-hours for mounting and removing work pieces. As a result, the product cost of the workpiece can be reduced. Further, since it is not necessary to use an organic solvent when removing each work piece, it is possible to reduce the number of man-hours for cleaning the work piece and to improve or improve the work environment. Further, since auxiliary materials such as wax and organic solvent are not required, the running cost can be greatly reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing a clamp device according to a first embodiment of the present invention.

FIG. 2 is a side view showing a fixed state of a glass block.

FIG. 3 is a side view showing a released state of the prism.

FIG. 4 is a perspective view showing a glass block.

FIG. 5 is a perspective view showing a clamp device according to a second embodiment of the present invention.

FIG. 6 is a perspective view showing a jig.

FIG. 7 is a schematic cross-sectional view showing a fixed state of a glass block.

FIG. 8 is a schematic sectional view showing a glass block.

FIG. 9 is a sectional view showing a clamp device according to a third embodiment of the present invention.

[Explanation of symbols]

 1, 2 and 3 Clamping device 10 Mounting table 20 Supporting part 21 Clamping claw 22 Rubber 26 Passing groove 30 Coil spring 40 Fixing release mechanism 200 Glass block 210 Prism 300 Grinding stone

Claims (6)

[Claims] 1. A mounting table for mounting a workpiece to be cut by a plurality of cutting blades, and a support portion having a plurality of passage grooves into which the plurality of cutting blades are inserted, respectively. Characterized in that it is configured to fix the above-mentioned workpiece by the section on the mounting table,
Clamp device. 2. The support portion is provided with a claw portion, and the claw portion can be brought into and out of contact with the workpiece to fix or release the workpiece on the mounting table. Clamping device according to claim 1, characterized in that it comprises an unlocking means which can be. 3. A plurality of the support portions are separately provided corresponding to the plurality of workpiece pieces to be separated by the plurality of cutting blades, respectively.
The clamp device according to claim 1 or claim 2. 4. The clamp device according to claim 1, further comprising a biasing unit that biases the claw portion of the support portion in the contact direction. 5. The clamp device according to claim 1, wherein the claw portion has an elastic member at an abutting portion thereof. 6. A mounting table for mounting a workpiece to be cut by a plurality of cutting blades, and a support portion having a plurality of passage grooves into which the plurality of cutting blades enter, respectively. While fixing the work piece on the mounting table by means of the eccentric cam, the rotation of the eccentric cam causes the claw portion of the support part to move toward and away from the work piece, thereby allowing the work piece to be placed on the mounting table. A clamping device comprising a fixing releasing means for fixing and releasing.